EP 0174547 B1 19890719 - TONE SIGNAL GENERATION DEVICE FOR AN ELECTRONIC MUSICAL INSTRUMENT
Title (en)
TONE SIGNAL GENERATION DEVICE FOR AN ELECTRONIC MUSICAL INSTRUMENT
Publication
Application
Priority
JP 18042984 A 19840831
Abstract (en)
[origin: EP0174547A1] A first waveshape memory (20) stores a full waveshape of a tone from the start to the end of sounding of the tone or a portion thereof in plural periods. A second waveshape memory (21) stores waveshape data of a modification waveshape for the full waveshape or the portion thereof. A tone waveshape signal read out from the first waveshape memory (20) and a modification waveshape signal read out from the second waveshape memory (21) are both multiplied with respective coefficients whereby these waveshape signals are weighted. These weighted waveshape signals are added together to provide a mixed tone signal. By controlling the coefficients, the tone color imparted on the mixed signal is variously determined. The coefficients for the tone color control are provided in accordance with key scaling, key touch or operation states of control knobs. Thus, tone signals having a variety of tone color changes can be realized without the necessity of many wave memories.
IPC 1-7
IPC 8 full level
G10H 7/00 (2006.01); G10H 7/02 (2006.01); G10H 7/04 (2006.01)
CPC (source: EP US)
G10H 7/04 (2013.01 - EP US); G10H 2250/595 (2013.01 - EP US); Y10S 84/09 (2013.01 - EP US); Y10S 84/10 (2013.01 - EP US)
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
EP 0174547 A1 19860319; EP 0174547 B1 19890719; DE 3571712 D1 19890824; JP H079588 B2 19950201; JP S6159396 A 19860326; US 4679480 A 19870714
DOCDB simple family (application)
EP 85110739 A 19850827; DE 3571712 T 19850827; JP 18042984 A 19840831; US 77030885 A 19850827